From: matz@... (Yukihiro Matsumoto)
Date: 2004-02-25T17:44:30+09:00
Subject: Re: rehash segfault

Hi,

In message "Re: rehash segfault"
    on 04/02/25, Eivind Eklund <eivind@FreeBSD.org> writes:

|> Ruby hashes are not completely thread-safe.  I knew the problem
|> existed, but I couldn't fix it without significant slow-down.
|
|What is the exact problem that makes it hard to fix without slowdown?

Hash calls back a few Ruby methods, e.g. "hash", "eql?", etc, during
which context switch may happen.  To avoid this, the easiest way is to
prepare mutex for each hash and protect every hash operation, that, I
think, cause significant slow-down.

							matz.